Objective: To evaluate the effectiveness of school-based nutrition education in reducing or preventing overweight and obesity in children and adolescents.Sources: Systematic search in 14 databases and five systematic reviews for randomized controlled trials conducted in schools to reduce or prevent overweight in children and adolescents. Body mass index and fruit and vegetable intake were used as primary and secondary measures of outcome, respectively. There was no restriction by date of publication or language, except for languages with structured logograms. We excluded studies on specific populations presenting eating disorders, dyslipidemia, diabetes, and physical or mental disabilities, as well as studies that used drugs or food supplements as components of the intervention. The assessment by title and abstract and the quality assessment were performed independently by two researchers. We used the Centre for Reviews and Dissemination's guidance for undertaking reviews in health care and the software EPPI-Reviewer 3. Summary of the findings:From the initially retrieved 4,809 references, 24 articles met the inclusion criteria. The extracted data show that there is evidence of positive effects on anthropometry and of increase in fruit and vegetable consumption. Characteristics of the interventions that demonstrated effectiveness are: duration > 1 year, introduction into the regular activities of the school, parental involvement, introduction of nutrition education into the regular curriculum, and provision of fruits and vegetables by school food services. Conclusion:Interventions in schools to reduce overweight and obesity, as well as to increase fruits and vegetable consumption, have demonstrated effectiveness in the best-conducted studies.J Pediatr (Rio J). 2011;87(5):382-92: Review, children, adolescent, nutrition policy, education, randomized controlled trials, body mass index, fruit, vegetables, school. ResumoObjetivo: Avaliar a efetividade da educação nutricional em escolas na redução ou prevenção de sobrepeso e obesidade em crianças e adolescentes. Fontes dos dados:Busca sistemática em 14 bases de dados e cinco revisões sistemáticas por ensaios controlados randomizados realizados em escolas com o objetivo de reduzir ou prevenir o sobrepeso em crianças e adolescentes. O índice de massa corporal e o consumo de frutas e verduras foram utilizados como desfechos primário e secundário, respectivamente. Não houve restrição de data de publicação ou idioma, exceto para idiomas com logogramas. Excluímos estudos em populações com distúrbios alimentares, dislipidemia, diabetes e deficiência física ou mental, e que utilizassem medicamentos ou suplementos alimentares. A avaliação por título e resumo e a avaliação de qualidade foram realizadas de forma independente por dois pesquisadores. Utilizamos as orientações do Centre for Reviews and Dissemination para a elaboração de artigos de revisão em saúde e o programa EPPI-Reviewer 3.Síntese dos dados: Das 4.809 referências inicialmente encontradas, 24 artigos pree...

and 3 Fundac Ëa Äo Seade, Brazil OBJECTIVE: This study aimed to describe the prevalence of overweight and obesity (OW O) among Brazilian adolescents and to identify risks for subpopulations de®ned according to the ®ve country macro-regions and situation (urban±rural) of the domiciles, income, years of school attendance, age and sex. DESIGN: A nationwide home-based survey representative of the Brazilian civilian noninstitutionalized population, performed in 1989. METHODS: The sampling plans followed a strati®ed, multistage, probability cluster design in The National Research of Health and Nutrition sample, which collected anthropometric data of 14,455 domiciles. In all, 13,715 adolescents ranging from 10 to 19 y of age were studied. The OW O was de®ned from a body mass index (BMI) equal or superior to the 85th percentile of the reference population of the NCHS. The prevalences in the different studied groups were compared using the adjusted odds ratio in logistic regression models. RESULTS: The prevalence of OW O was of 7.7%, reaching 10.6% within the female group and 4.8% within the male group. A direct relation could be established between the socioeconomic level and OW O. Adolescents of the most industrialized region of the country presented a risk of OW O 1.86 (95% CI 1.51 ± 2.30) times higher than that found in the least developed region. Male youngsters who lived in urban areas were more liable (OR 1.71, 95% CI 1.30 ± 2.25) to overweight than their counterparts of rural areas. The occurrence of menarche increased two and a half times (OR 2.58, 95% CI 2.11 ± 3.15) the risk of OW O within the female group of adolescents. CONCLUSIONS: The results demonstrate a low prevalence of OW O among Brazilian adolescents when compared with adolescents of more industrialized regions. The OW O is twice as high within the female group, which represents a much greater difference than the one encountered in industrialized countries, probably owing to the muscular work carried out preponderantly by male adolescents of lower socioeconomic levels. Higher prevalences in subpopulations of higher socioeconomic level and of more industrialized regions show the great need for differentiated actions to control overweight and obesity in the country.

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Objective: The variety of toxocariasis clinic manifestations and its relationship with asthma motivated this study. The aim was to study T.canis seropositivity at a public pediatric service and its association with laboratory, epidemiological and clinical factors.Methods: This study was cross-sectional and controlled. Two hundred and eight children, from 1 to 14 years old and treated at the University of Santo Amaro Pediatric Department s Immunology and Pneumology clinic between January 2000 and January 2001, underwent serology testing. Antibodies were detected by ELISA testing for the larval excretory-secretory antigen of T. canis. We used the chi-square test for T.canis seropositivity (titers > 1:320) associations with: puppies at home, contact with soil, geophagia, onicophagia, mother s educational level, asthma, chronic cough, repetitive pneumonia, skin manifestations, rhinitis, hepatomegaly, splenomegaly, abdominal pain, anemia, eosinophilia, immunoglobulins, parasitosis and stunted growth. The Kruskal-Wallis variance analysis method was used for mean comparisons between seropositive and seronegative groups. Significance was set at p < 0.05.Results: Seroprevalence was 54.8%, with a mean age of 6.5 years while for seronegative children the mean age was 5.8 years, showing no significant difference. There was also no difference between sexes. Seropositivity was significantly associated with puppies at home, contact with soil, hepatomegaly, asthma, eosinophilia, increased serum immunoglobulin (Ig) E levels and stunted growth. Conclusion:Seroprevalence was elevated in this study . T.canis infection must be considered in at-risk children, such as those with puppies at home, who have had contact with soil, who have hepatomegaly and/or asthma with eosinophilia and increased serum IgE.J Pediatr (Rio J). 2005;81(2):126-32: Toxocariasis, asthma, child.

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Epidemiologistas que estudam câncer têm observado que a sua prevalência no mundo tem aumentado de maneira significativa no último século. Acredita-se que este resultado está relacionado, entre outros aspectos, com a industrialização e a urbanização ocorridas neste período. De fato, a morbi-mortalidade associada ao câncer observada em países desenvolvidos é maior do que em países em desenvolvimento. Além disso, algumas formas específicas de câncer, como o de cólon e reto, próstata e mama feminina, são mais freqüentes em países desenvolvidos, enquanto outras, como de estômago, esôfago e colo de útero têm maior incidência nos países em desenvolvimento. Padrões distintos de câncer também são observados entre indivíduos que emigram para um novo país ou região. Com base em estudos epidemiológicos, analisou-se a relação entre câncer e nutrição, e algumas modificações na alimentação que podem prevenir alguns tipos de cânceres.

This paper aims to evaluate the hygienic-sanitary conditions of kitchens in philan-

OBJETIVO: Descrever e discutir a introdução de alimentos industrializados na dieta de crianças frequentadoras de berçários em creches, considerando a recomendação do Ministério da Saúde para uma alimentação saudável. MÉTODOS: Estudo transversal com 270 crianças frequentadoras de berçários de 8 creches públicas e filantrópicas do município de São Paulo. Por meio de questionário estruturado e pré-codificado, foi avaliada a introdução de alimentos a partir de 11 perguntas. Para cada alimento analisado foi registrada a idade em meses de introdução e avaliada a concordância com o oitavo passo do Guia Alimentar. No estudo das associações, utilizou-se o teste Qui-quadrado, a partir das variáveis idade e escolaridade maternas, renda familiar e trabalho da mãe fora do lar. RESULTADOS: Os resultados mostram que para aproximadamente 2/3 das crianças foram oferecidos, antes dos 12 meses, alimentos com potencial obesogênico, como macarrão instantâneo, salgadinhos, bolacha recheada, suco artificial, refrigerante e bala/pirulito/chocolate. São os filhos de mães com baixa escolaridade, mais jovens e com menor renda, os mais susceptíveis ao erro alimentar de introdução precoce de alimentos industrializados. CONCLUSÃO: Diante desses resultados, medidas educativas e preventivas devem ser propostas para a formação de hábitos alimentares saudáveis desde a infância, além da criação de campanhas abrangentes e efetivas que estimulem o consumo de frutas e hortaliças, considerando-se os fatores culturais, comportamentais e afetivos envolvidos com a alimentação.